4pcs Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator Protect ULEFONE I9 smart watch

Protect ULEFONE I9 smart watch from water (Not for swimming or taking a shower)

create a unique appearance and wonderful hand-feelings

which shows the excellent quality

Open the Mijia APP

Suitable for home and travel use

4pcs Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator Protect ULEFONE I9 smart watchProduct Features: Operation Guideline: 1. Unscrew the brake fluid reservoir, and pull off the cap of the Brake fluid tester pen. Dip the test probes into the brake fluid up to the plastic rim of the device. 2. Press the button for power on, green LED will light up. Insert the tester into reservoir for one second then the tester result will be correctly indicated by LEDs. Repress the button for power off. The tester will automatically power off after